I'm going to review, what is it is that the lady who had the equipment made alcohol I do not know where and I did not work anymore the display, change a cable that does not look very well it may be that tension does not reach you because it was bad, they are of those thin wires that have several legs, I'll check, I saw 2 electrolytic capacitors that look like they put paint on it or something like that is just the part where the connection goes to the display, I'm going to change that cable and I'm going to see the tensions that decide on the transistors.